Cartomizer structure for automated assembly
09848645 · 2017-12-26
Assignee
Inventors
- Zvika Feldman (Tzoran, IL)
- Arie Holtz (Jerusalem, IL)
- Eyal Peleg (Tsoran, IL)
- Sammy Capuano (Ramat Bet Shemesh, IL)
Cpc classification
A24F40/40
HUMAN NECESSITIES
Y10T29/49002
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Y10T29/49117
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
H01R9/00
ELECTRICITY
International classification
H05B3/06
ELECTRICITY
Abstract
A cartomizer assembly of an electronic cigarette which is formed from automated assembly compatible parts comprises a container assembly including a container and a heater coil surrounding a wick in an airflow space of the container. The entire coil of the heater coil is inside the container and the heater coil is configured to heat liquid on the wick to generate an aerosol mist during a vaporization process. A liquid storage space is in liquid communication with the wick and is operable to supply liquid to the wick. The heater, the wick, and the container are shaped such that the heater and wick can be dropped into the container during automated assembly thereof and be directed to and located at a desired location in the container.
Claims
1. A cartridge assembly of an electronic vaping device configured to connect with a battery portion of the electronic vaping device, the cartridge assembly formed from automated assembly compatible parts, the cartridge assembly comprising: a container assembly including a container and a heater coil, the heater coil surrounding a wick in an airflow space of the container, the entire coil portion of the heater coil located inside the container and the heater coil configured to heat liquid on the wick to generate a vapor; a liquid storage space in liquid communication with the wick; an outer post; and an inner post disposed in the outer post, the container on the inner post, and the inner post and the outer post supporting conductors electrically connected to heater coil leads of the heater coil that are held in location notches of the container, the conductors configured to electrically connect the heater coil leads with leads of the battery of the battery portion via the inner post and the outer post, the conductors isolated from the liquid storage space of the cartridge assembly.
2. The cartridge assembly of claim 1, wherein the container configured to reduce exposure of the conductors to air flow in the airflow space thereof and heat generated by the heater coil and the container configured to reduce exposure of the liquid storage space to heat generated by the heater coil.
3. The cartridge assembly of claim 1, wherein the inner post includes chamfers at locations near the heater coil such that heat generated by the heater coil received by the inner post is reduced.
4. The cartridge assembly of claim 1, wherein the inner post includes orientation fingers which are arranged so as to orient the inner post disposed in the outer post and streamline the assembly process thereof.
5. The cartridge assembly of claim 1 comprising an isolated tube disposed on the inner post, the isolated tube between the inner post and the conductors.
6. The cartridge assembly of claim 1, wherein the cartridge assembly is disposable.
7. The cartridge assembly of claim 1, further comprising: a sleeve disposed above the container, the sleeve forming a portion of the airflow space of the cartridge assembly, which is in fluid communication with the airflow space of the container.
8. The cartridge assembly of claim 1, wherein the cartridge assembly includes a thread which is configured to connect the cartridge assembly to the battery portion.
9. The cartridge assembly of claim 8, wherein the thread surrounds the outer post, and an insulating ring electrically isolates the post from the thread such that an electrical circuit can be formed between the cartridge assembly and the battery portion.
10. An electronic vaping device comprising: the cartridge assembly of claim 1 and a battery portion including a battery configured to supply power to the heater coil of the cartridge assembly.
11. The electronic vaping device of claim 10, wherein the battery portion further comprises: a controller; and a flow sensor, the flow sensor configured to initiate the supply of power from the battery to the heating element when the flow sensor senses air flow through the electronic vaping device.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
(1) Non-limiting and non-exhaustive embodiments are described with reference to the following drawings. The components in the drawings are not necessarily to scale, emphasis instead being placed upon illustrating the principles of embodiments as disclosed herein. In the drawings, like referenced numerals designate corresponding parts throughout the different views.
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DETAILED DESCRIPTION
(19) By way of introduction, a system and method may improve the structure of and assembly process for a cartomizer of an e-Cig. The improved cartomizer isolates certain components with features that can cause manufacturing difficulties and confines them as a sub-assembly (e.g. a wick and a heater coil into a wick-coil assembly) in a confining process. The sub-assembly's characteristics may be determined according to the requirements derived from its purpose and the environmental conditions, from the automated assembly process requirements and from requirements of miscellaneous bodies such as ISO, FDA and the like. In the confining process, the flexible parts, the self-disintegrating parts and the uneven parts may be tightly coupled to one another and/or to some other solid component, while being anchored around the extremities. As a result of this confining process, an automated assembly process may be possible. The “confinement” may be either made consecutively or separately from the production and/or assembly stage. Implementing these confinement modifications and the changes to the structure of various components may improve the assembly process of the cartomizer. The assembly process allows for easy substitution and the flexibility of using different components as long as the different components are confined with similar characteristics and connectivity.
(20) Other systems, methods, features and advantages will be, or will become, apparent to one with skill in the art upon examination of the following figures and detailed description. It is intended that all such additional systems, methods, features and advantages be included within this description, be within the scope of embodiments as disclosed herein, and be protected by the following claims. Nothing in this section should be taken as a limitation on those claims. Further aspects and advantages are discussed below.
(21) Subject matter will now be described more fully hereinafter with reference to the accompanying drawings, which form a part hereof, and which show, by way of illustration, specific example embodiments. Subject matter may, however, be embodied in a variety of different forms, and therefore, covered or claimed subject matter is intended to be construed as not being limited to any example embodiments set forth herein; example embodiments are provided merely to be illustrative. Likewise, a reasonably broad scope for claimed or covered subject matter is intended. Among other things, for example, subject matter may be embodied as methods, devices, components, or systems. Accordingly, embodiments may, for example, take the form of hardware, software, firmware or any combination thereof (other than software per se). The following detailed description is, therefore, not intended to be taken in a limiting sense.
(22) Throughout the specification and claims, terms may have nuanced meanings suggested or implied in context beyond an explicitly stated meaning. Likewise, the phrase “in one embodiment” as used herein does not necessarily refer to the same embodiment and the phrase “in another embodiment” as used herein does not necessarily refer to a different embodiment. It is intended, for example, that claimed subject matter include combinations of example embodiments in whole or in part.
(23) In general, terminology may be understood at least in part from usage in context. For example, terms, such as “and”, “or”, or “and/or,” as used herein may include a variety of meanings that may depend at least in part upon the context in which such terms are used. Typically, “or” if used to associate a list, such as A, B or C, is intended to mean A, B, and C, here used in the inclusive sense, as well as A, B or C, here used in the exclusive sense. In addition, the term “one or more” as used herein, depending at least in part upon context, may be used to describe any feature, structure, or characteristic in a singular sense or may be used to describe combinations of features, structures or characteristics in a plural sense. Similarly, terms, such as “a,” “an,” or “the,” again, may be understood to convey a singular usage or to convey a plural usage, depending at least in part upon context. In addition, the term “based on” may be understood as not necessarily intended to convey an exclusive set of factors and may, instead, allow for existence of additional factors not necessarily expressly described, again, depending at least in part on context.
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(25) The e-Cig may include two parts. The first part is often just referred to as the battery or battery portion (i.e. battery enclosure) and it includes the battery 106, the air flow sensor 104 and the controller 102. The second part is the cartomizer 113 (i.e. cartridge) that is filled up with e-Liquid 110 and flavors that are required for smoke and flavor generation. The battery portion and the cartomizer may be connected by metal connectors. An airflow tube of the battery enclosure and an airflow tube of the cartomizer may enable the smoker to puff through the electronic cigarette and activate the airflow sensor 104 inside the battery portion. This may trigger the controller 102 and thereby cause the heating element (i.e. a heater coil) 111 inside the cartomizer to get hot, evaporate the e-Liquid that is in the cartomizer and form vapor. Although not shown in
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(28) In some products, connecting the conducting wires 308 to the post 312 and/or the thread 316 is based on inserting the tips of the conducting wires 308 (the ends of each the conducting wires which are not connected to the heater coil 305) to a respective one of the metal parts such as the post 312 and the thread 316 wherein an insulating ring 315 electrically isolates the post 312 from the thread 316 such that an electrical circuit can be formed between the cartomizer 113 and the battery portion. In an embodiment, the connection of the conducting wires 308 to the leads 307 of the heater coil 305 may be forgone wherein the leads 307 of the heater coil 305 are connected to the metal parts (i.e. the respective post 312 and thread 316) at contact points thereof (as used herein contact points). In this embodiment, the seals of the cartomizer 113 should not be compromised, and further there is a possibility of heat buildup in the heater coil 305 starting at contact points wherein one of the leads 307 contacts the post 312 or the thread 316. In an embodiment, the heater coil 305 may need to be in close proximity to the contact points, instead of the mid-section of the cartomizer 113 so as to enable optimal utilization of the e-Liquid 110.
(29) The connection of the heater coil 305 to the contacts points and the location processes which position the heater 305 in the fiberglass tube 202 may involve the insertion of the wick 306 and heater coil 305 into the fiberglass tube 202, or conversely placing the fiberglass tube 202 around a wick-coil assembly 306/305 formed from the wick 306 and heater coil 305. During the placement of the wick-coil assembly 306/305 in the fiberglass tube 202 distortions and misplacements between the heater coil 305 and wick 306 or between the wick-coil assembly 306/305 and the fiberglass tube 202 can occur. Further, if part of the heater coil 305 were to touch the sponge (not shown), which holds the e-Liquid 110, it may cause burning of the sponge during heating of the heater coil 305. As such, the elasticity requirements for assembly purposes of the cartomizer 113 thus meant that the conducting wires 308 were located within the storage space occupied by the e-Liquid 110 and optionally the sponge, rather than the airflow space 108 (see
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(31) The assembly method is based on the knowledge of the location and orientation of the wick 506 and the heater coil 505 forming a wick-coil assembly 506/505 (as used herein a “set”) when exiting a winding machine that forms the sets. After a set exits the winding machine and after the sets disconnection from the other sets formed by the winding machine, a process is executed by which a mechanical clamp grabs the set and feeds it into the container 502. In machines in which the wick cutting occurs before winding the heater coil therearound, the stage of grabbing the product as a set may occur after the winding and the cutting of the wire are completed.
(32) As shown in
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(35) The design of the conductors 501 by structure and material is used not only for conducting the electrical current into the heater coil 505, but also for conducting and thereby removing the excess heat that develops in the heater coil 505, (excess because of the position of the conductors at the edges of the heater coil leads 507 that heat up only after heating the center of the heater coil 505) toward the larger metal parts of the battery leads outside the cartomizer assembly. Some of the heat that develops in the heater coil 505 is conducted by the container 502 toward the sponge and e-Liquid surrounding it which can cause a decrease in e-Liquid viscosity and improve the e-Liquid flow within the wick, and thus improve the smoking experience.
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(37) The method for the insertion of a conductor 501 allows the use of more efficient, commercially available materials and production methods, and opens up possibilities for automating the assembly process as well as upgrading it into a “green” process in terms of material and energy resources necessary for assembly. Simplification and flexibility in the assembly process tabs have been added to several parts as shown in
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(39) In the process of inserting the inner post 504 into the outer post 508 the conductive strip 550 used to form the conductors 501 is added therebetween, so that the act of inserting the inner post 504 into the outer post 508 positions the conductive strip 550 or conductors 501 in place while obtaining a seal that fixes the conductors 501 in place. The conductive strip 550 can be fed as a connected strip wherein the separation thereof into two sections to form the conductors 501 is performed after the completion of insertion process. Alternatively, the conductors 501 can be fed in the insertion process as two separate units. The utilization of conductors 501 with large surface area and volume enables the heat conduction from the heater coil 505 to the outside. The inner post's 504 resilience to heat that develops at the heater coil 505 can be improved by creating gradients and moving margins that are not essential for proper functioning of the electronic cigarette away from the heat. Further improvement may be achieved by masking the part by the electrical conductors 501 that block and conduct the heat in order to disperse it away towards the relatively high thermal mass thereof in comparison with the heater coil 505. Since e-Cig smoking is not continuous, the temperature within the conductors 501 and other parts of the e-Cig does not significantly rise.
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(44) The location of the conductors 501 is not in the e-Liquid in the e-Liquid container 520 and therefore they are not subject to the mutual effect on/from the e-Liquid. The location may not be entirely in the air space 521 either so that its mutual effect on/from the aerosol mist is minimal. The design of the conductors 501 with a ring on one pole and/or two rings to both poles of the battery allows using batteries in which the surface of the poles are not uniform and smooth, but rather, notched for various reasons such as to accommodate side vents. In places where notches are needed, the elastic properties of the conductors 501 may be improved by changing their shape and/or adding a tab whose physical structure allows it to be springy and/or creating a double wall, triple wall or more in order to obtain condensation at the necessary places and applications.
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(48) The illustrations of the embodiments described herein are intended to provide a general understanding of the structure of the various embodiments. The illustrations are not intended to serve as a complete description of all of the elements and features of apparatus and systems that utilize the structures or methods described herein. Many other embodiments may be apparent to those of skill in the art upon reviewing the disclosure. Other embodiments may be utilized and derived from the disclosure, such that structural and logical substitutions and changes may be made without departing from the scope of the disclosure. Additionally, the illustrations are merely representational and may not be drawn to scale. Certain proportions within the illustrations may be exaggerated, while other proportions may be minimized. Accordingly, the disclosure and the figures are to be regarded as illustrative rather than restrictive.